A complete SMTP class of PHP (solve the problem when the mail server needs verification)

Smtp. php

<? Php
Class smtp

{

/* Public Variables */

Var $ smtp_port;

Var $ time_out;

Var $ host_name;

Var $ log_file;

Var $ relay_host;

Var $ debug;

Var $ auth;

Var $ user;

Var $ pass;

/* Private Variables */
Var $ sock;

/* Constractor */

Function smtp ($ relay_host = "", $ smtp_port = 25, $ auth = false, $ user, $ pass)

{

$ This-> debug = FALSE;

$ This-> smtp_port = $ smtp_port;

$ This-> relay_host = $ relay_host;

$ This-> time_out = 30; // is used in fsockopen ()
#

$ This-> auth = $ auth; // auth

$ This-> user = $ user;

$ This-> pass = $ pass;

#

$ This-> host_name = "localhost"; // is used in HELO command
$ This-> log_file = "";

 

$ This-> sock = FALSE;

}

/* Main Function */

Function sendmail ($ to, $ from, $ subject = "", $ body = "", $ mailtype, $ cc = "", $ bcc = "", $ additional_headers = "")

{

$ Mail_from = $ this-> get_address ($ this-> strip_comment ($ from ));

$ Body = ereg_replace ("(^ | (\ r \ n) (\.)", "\ 1. \ 3", $ body );

$ Header. = "MIME-Version: 1.0 \ r \ n ";

If ($ mailtype = "HTML "){

$ Header. = "Content-Type: text/html \ r \ n ";

}

$ Header. = "To:". $ to. "\ r \ n ";

If ($ cc! = ""){

$ Header. = "Cc:". $ cc. "\ r \ n ";

}

$ Header. = "From: $ from <". $ from. "> \ r \ n ";

$ Header. = "Subject:". $ subject. "\ r \ n ";

$ Header. = $ additional_headers;

$ Header. = "Date:". date ("r"). "\ r \ n ";

$ Header. = "X-Mailer: By Redhat (PHP/". phpversion (). ") \ r \ n ";

List ($ msec, $ sec) = explode ("", microtime ());

$ Header. = "Message-ID: <". date ("YmdHis", $ sec ). ". ". ($ msec * 1000000 ). ". ". $ mail_from. "> \ r \ n ";

$ TO = explode (",", $ this-> strip_comment ($ ));

If ($ cc! = ""){

$ TO = array_merge ($ TO, explode (",", $ this-> strip_comment ($ cc )));

}

If ($ bcc! = ""){

$ TO = array_merge ($ TO, explode (",", $ this-> strip_comment ($ bcc )));

}

$ Sent = TRUE;

Foreach ($ TO as $ rcpt_to ){

$ Rcpt_to = $ this-> get_address ($ rcpt_to );

If (! $ This-> smtp_sockopen ($ rcpt_to )){

$ This-> log_write ("Error: Cannot send email to". $ rcpt_to. "\ n ");

$ Sent = FALSE;

Continue;

}

If ($ this-> smtp_send ($ this-> host_name, $ mail_from, $ rcpt_to, $ header, $ body )){

$ This-> log_write ("E-mail has been sent to <". $ rcpt_to. "> \ n ");

} Else {

$ This-> log_write ("Error: Cannot send email to <". $ rcpt_to. "> \ n ");

$ Sent = FALSE;

}

Fclose ($ this-> sock );

$ This-> log_write ("Disconnected from remote host \ n ");

}

Return $ sent;

}

 

/* Private Functions */

 

Function smtp_send ($ helo, $ from, $ to, $ header, $ body = "")

{

If (! $ This-> smtp_putcmd ("HELO", $ helo )){

Return $ this-> smtp_error ("sending HELO command ");

}

# Auth

If ($ this-> auth ){

If (! $ This-> smtp_putcmd ("auth login", base64_encode ($ this-> user ))){

Return $ this-> smtp_error ("sending HELO command ");

}

If (! $ This-> smtp_putcmd ("", base64_encode ($ this-> pass ))){

Return $ this-> smtp_error ("sending HELO command ");

}

}

#

If (! $ This-> smtp_putcmd ("MAIL", "FROM: <". $ from. "> ")){

Return $ this-> smtp_error ("sending mail from command ");

}

If (! $ This-> smtp_putcmd ("RCPT", "TO: <". $ to. "> ")){

Return $ this-> smtp_error ("sending rcpt to command ");

}

If (! $ This-> smtp_putcmd ("DATA ")){

Return $ this-> smtp_error ("sending DATA command ");

}

If (! $ This-> smtp_message ($ header, $ body )){

Return $ this-> smtp_error ("sending message ");

}

If (! $ This-> smtp_eom ()){

Return $ this-> smtp_error ("sending <CR> <LF>. <CR> <LF> [EOM]");

}

If (! $ This-> smtp_putcmd ("QUIT ")){

Return $ this-> smtp_error ("sending QUIT command ");

}

Return TRUE;

}

Function smtp_sockopen ($ address)

{

If ($ this-> relay_host = ""){

Return $ this-> smtp_sockopen_mx ($ address );

} Else {

Return $ this-> smtp_sockopen_relay ();

}

}

Function smtp_sockopen_relay ()

{

$ This-> log_write ("Trying to". $ this-> relay_host. ":". $ this-> smtp_port. "\ n ");

$ This-> sock = @ fsockopen ($ this-> relay_host, $ this-> smtp_port, $ errno, $ errstr, $ this-> time_out );

If (! ($ This-> sock & $ this-> smtp_ OK ())){

$ This-> log_write ("Error: Cannot connenct to relay host". $ this-> relay_host. "\ n ");

$ This-> log_write ("Error:". $ errstr. "(". $ errno. ") \ n ");

Return FALSE;

}

$ This-> log_write ("Connected to relay host". $ this-> relay_host. "\ n ");

Return TRUE ;;

}

 

Function smtp_sockopen_mx ($ address)

{

$ Domain = ereg_replace ("^. + @ ([^ @] +) $", "\ 1", $ address );

If (! @ Getmxrr ($ domain, $ MXHOSTS )){

$ This-> log_write ("Error: Cannot resolve MX \" ". $ domain." \ "\ n ");

Return FALSE;

}

Foreach ($ MXHOSTS as $ host ){

$ This-> log_write ("Trying to". $ host. ":". $ this-> smtp_port. "\ n ");

$ This-> sock = @ fsockopen ($ host, $ this-> smtp_port, $ errno, $ errstr, $ this-> time_out );

If (! ($ This-> sock & $ this-> smtp_ OK ())){

$ This-> log_write ("Warning: Cannot connect to mx host". $ host. "\ n ");

$ This-> log_write ("Error:". $ errstr. "(". $ errno. ") \ n ");

Continue;

}

$ This-> log_write ("Connected to mx host". $ host. "\ n ");

Return TRUE;

}

$ This-> log_write ("Error: Cannot connect to any mx hosts (". implode (",", $ MXHOSTS). ") \ n ");

Return FALSE;

}

 

Function smtp_message ($ header, $ body)

{

Fputs ($ this-> sock, $ header. "\ r \ n". $ body );

$ This-> smtp_debug ("> ". str_replace ("\ r \ n", "\ n ". ">", $ header. "\ n> ". $ body. "\ n> "));

 

Return TRUE;

}

 

Function smtp_eom ()

{

Fputs ($ this-> sock, "\ r \ n. \ r \ n ");

$ This-> smtp_debug (". [EOM] \ n ");

 

Return $ this-> smtp_ OK ();

}

 

Function smtp_ OK ()

{

$ Response = str_replace ("\ r \ n", "", fgets ($ this-> sock, 512 ));

$ This-> smtp_debug ($ response. "\ n ");

 

If (! Ereg ("^ [23]", $ response )){

Fputs ($ this-> sock, "QUIT \ r \ n ");

Fgets ($ this-> sock, 512 );

$ This-> log_write ("Error: Remote host returned \" ". $ response." \ "\ n ");

Return FALSE;

}

Return TRUE;

}

Function smtp_putcmd ($ cmd, $ arg = "")

{

If ($ arg! = ""){

If ($ cmd = "") $ cmd = $ arg;

Else $ cmd = $ cmd. "". $ arg;

}

Fputs ($ this-> sock, $ cmd. "\ r \ n ");

$ This-> smtp_debug (">". $ cmd. "\ n ");

Return $ this-> smtp_ OK ();

}

Function smtp_error ($ string)

{

$ This-> log_write ("Error: Error occurred while". $ string. ". \ n ");

Return FALSE;

}

Function log_write ($ message)

{

$ This-> smtp_debug ($ message );

If ($ this-> log_file = ""){

Return TRUE;

}

$ Message = date ("M d H: I: s"). get_current_user (). "[". getmypid (). "]:". $ message;

If (log_file ">! @ File_exists ($ this-> log_file) |! ($ Fp = @ fopen ($ this-> log_file, ""))){

$ This-> smtp_debug ("Warning: Cannot open log file \" ". $ this-> log_file." \ "\ n ");

Return FALSE ;;

}

Flock ($ fp, LOCK_EX );

Fputs ($ fp, $ message );

Fclose ($ fp );

Return TRUE;

}

Function strip_comment ($ address)

{

$ Comment = "\ ([^ ()] * \)";

While (ereg ($ comment, $ address )){

$ Address = ereg_replace ($ comment, "", $ address );

}

Return $ address;

}

Function get_address ($ address)

{

$ Address = ereg_replace ("([\ t \ r \ n]) +", "", $ address );

$ Address = ereg_replace ("^. * <(. +)>. * $", "\ 1", $ address );

Return $ address;

}

Function smtp_debug ($ message)

{

If ($ this-> debug ){

Echo $ message;

}

}

}

?>

Test. php

<? Php

/*

This is a test program !!!

Set the following parameters according to the instructions. The following uses the user of tom.com as an example.

*/

Require ("sm. php ");

######################################## ##

$ Smtpserver = "smtp.tom.com"; // SMTP Server

$ Smtpserverport = 25; // SMTP server port

$ Smtpusermail = "someone@tom.com"; // user email address of the SMTP server

$ Smtpemailto = "jack@knowsky.com"; // to whom to send

$ Smtpuser = "someone"; // User Account of the SMTP server

$ Smtppass = "someonepass"; // user password of the SMTP server

$ Mailsubject = "Test Subject"; // Email Subject

$ Mailbody = "

$ Mailtype = "HTML"; // The email format (HTML/TXT). TXT is a text email.

######################################## ##

$ Smtp = new smtp ($ smtpserver, $ smtpserverport, true, $ smtpuser, $ smtppass); // here, true indicates that authentication is used; otherwise, authentication is not used.

$ Smtp-> debug = TRUE; // whether to display the sent debugging information

$ Smtp-> sendmail ($ smtpemailto, $ smtpusermail, $ mailsubject, $ mailbody, $ mailtype );

?>